Since AE2 is unable to change the mode of the IC2 Metal Former, you will need one metal former to make plates, and one to make wires. However, you can reuse the same machine for all wires or all plates. Then you can use either the Level Emitter and Redstone Signal control to maintain a backlog or, if you don't care about how long it takes, just set up an Interface with crating of ingots to plates or wires.
Alternately, as long as you don't care about resource bleed, you can just set up crafting recipes for hammer + ingot and Snips + Plate, then have a crafting upgrade so if there isn't a hammer or snips, it will craft one first.